import java.util.*;
public class Example4_11 {
	public static void main (String args[]) {
	   Scanner scanner = new Scanner(System.in);
	   int [] a = {12,34,9,23,45,6,45,90,123,19,34};
	   Arrays.sort(a);
	   System.out.println(Arrays.toString(a));
	   System.out.println("输入整数，程序判断该整数是否在数组中:");
	   int number = scanner.nextInt();
	   int index=Arrays.binarySearch(a,number);
	   if(index>=0)
	      System.out.println(number+"和数组中索引为"+index+"的元素值相同");
	   else
	      System.out.println(number+"不与数组中任何元素值相同");
	}
}